Dump-car-door lock



May 28, 1929. R E MCGAHEY 1,714,797

DUMP CAR DOOR LOCK Filed Nov. 17, 1927 4 Sheets-Sheet l May 28, 1929. MCGAHEY 1,714,797

- DUMP CAR DOOR LOCK Filed Nov. 17, 1927 4 Sheets-Sheet 3 1 a. Jug. 7.

40 23-9 Snow 4'07 May28 1929. I RE. MCGAHEY 1,114,797

DUMP CAR DooR LOCK Filed Nov. 17, 1927 4 Sheets-Sheet 4 JZoZaer 5'. (We 64k e attouwq Patented May 28, 1929.

UNITED STATES ROBERT E. MCGAHEY, or ALEXANDRIA, VIRGINIA.

v DUMP-(manger; LOCK,

Application filed November 17, 1927. Serial No. 233,826.

This invention relates to dump car door locks and has for an object to provide a lock of the class and for the purpose embodying new and improved features of convenience of operation.

A further object of the invention is to provide'a lock of the character and for the purpose embodying new and improved features of reliability in action.

With these and other objects 'in View, the invention comprises certain novel parts, elements, units, combinations, constructions, interactions, and functions as disclosed in the drawings together with mechanical and functional equivalents thereof, as will be hereinafter more fully described and claimed.

' In the drawings:

Figure 1 is a view of the improved dump car door lock in perspective shown in position of the door being locked but the parts arranged for unlocking.

Figure 2 is a perspective view of the lock with the parts unlocked showing the position and manner of locking.

Figure 3 is a view of the device in side elevation as it would appear from one end of the car and in locked position.

Figure 4 is a sectional view of the top part of the housing and also with the locking member drawn back to unlocking position.

Figure 5 is a view ofthe device in end elevation and indicated by arrow, 5, at Figure 3 showing the hasp in section. 1

Figure 6 is a longitudinal sectional view taken on substantially a median line as indicated by line 6-6 of Figure 3.

Figure 7 is a view in reverse elevation of the wedging member.

Figure 8 is a'view in elevation of the key member.

Figure 9 is a top plan View of the hasp.

Figure 10 is a view in side elevation of the devicein the position of the initial locking action.

Like characters of reference indicate corresponding parts throughout the several views. 7 p

The improved lock which forms the subject matter ofth'e present application, while possibly adapted for a wider variety of uses, is particularly intended for use in conjunction with a'dump car represented in the drawings by the numeral 10 to indicate the end of tance beyond the end of thedoor and is *here indicated as an angle iron which may or may not extend the entire length of the door and beyond the door at both ends for accomm'o-' dating a lock at each end'ofthe car. The exact manner of arrangementis immaterial.

'Rigidly secured to the car body '10 at a proper spacing from themargin which will be closed by the door 1 1, a' housing '1'3 is :secured in any approved manner as'by-thebolts or rivets 14;. The housing 13 is provided'with an opening '15 providing space forahasp 16 to pass therethrough. The hasp 1 6 is secured pivotally to the extended'end of'the bar 12, as indicated more particularly at Figures "1 and 8, bythe use of a block 17 and any approved fastening members as the rivets 18 and is provided with ears 19 spaced apart to 'acoutwai'dlyunder the pivot 20 andthe pivote end of the-hasp 16. The hasp 16 is also provided with a foot 24 which bears "upon the finger'28 to support the hasp against falling when it has been released from its looking engagement withand within the housing 13. The hasp 16 is provided with-a slot 25'and preferably with other perforations 26. The slot 25 is properly proportioned to receive a 'wedging member 27 which slides vertically within the'housing and is limited in its movement by a slot 28 formed therethrough, anda pin '29 inserted into and "through the housing 13., The wedging member is provided upon one edge with an inclination 30 which forms the wedging feature of the member so positioned that it will engage the end of the slot 25 remote from the door '11 as the wedging member 27 is driven home to draw thehasp 16 and the door 11 attached thereto more tightly to position. For driving the 'wedging member 27, a head 31 is provided with preferably an overhang 32 for disengaging the wedging member as will be more fully ex-' plained in the description of operation.

I turn is provided with a finger Q3 extendin- I Upon its normal back and opposite the overhang, the wedging member is provided with a furrow 33, Mounted also in-the housing andgto slide transversely relative to the path of movement of the wedging member 27 is a key 34 which is provided with a tongue 35 properly positioned. and proportioned to slide into the furrow 33 of the wedging member 30 when the parts are in fully assembled position, as shown at Figures 1, 3 and 6, but of such. length that, when the key 34 carrying the tongue 35 is driven back, it will assume the position shown in full linesgatFigure 4 andv will release the wedging member27.

To lock the key 34 against accidental displacement as byjarring or vibration, a lock is provided comprising a weighted part 36 pivoted to the key 34, preferably by bifurcating the end of the key as indieated at 37 and employing a pivotedpin 38 which pivots a reduced part of the lock between the members of the bifurcation. Preferably also the. ,lower corner of the reduced part is rounded off'as indicated at 39 and to provide for the properswinging'of the lock the lower corners of the bifurcated members are also rounded as shown at 40.

; Thehasp 16is provided with a rib or lug 41 positioned relative to the slot so that itwill be engaged by' the wedging member 27 when the door llhas becn only partially closed,

and for the reasons which will be explained more fully inthe explanation of'the operation. V

Inoperation, with the parts assembled as shown at Figure 3 and the door locked, to release the door the lock 36 is first swing up- 3W2l1dly to the position shown at Figure 8 whereupon the key 34 is driven from the position shown at Figure 3 to the positions shown at Figures 1, 2, and 4. Driving back the key 34 disengages the tongue from y thegroove33 so that the wedging member 27 may be driven from its engagement with the hasp16. This is preferably accomplished bytlie employment of? a hammer as shown at Figure 1, under the overhang 32 which drives the wedging member upwardly to release its the housing 13.

engagement with the slot 25 of the hasp 16. The door 11 is now free to swing open by its own weight, or the augmented weight ofthe contained material until the hasp 16 leaves After the material has been discharged, the door is closed] by swinging to a: proper position thefoot 24 and the linger 23holding the hasp16 to position'and prevent its falling down upon. its-pivot, so that it will conveniently enter theopening 15 of the. housing 13. After the hasp 16 has entered the housing 13,the door 11. swung as far toward closed position as maybe conveniently done by hand, whereupon the wedging mem- 1 her 27 will engage back of the lug 41, as

shown. moreparticularly at Figure 10, and retain the door 11 in such position. To draw the door to such position that the wedging member 27 may act conveniently within the slot 25 upon the hasp 16, a bar, as indicated at Figure 2, may be inserted through one of the perforations 26 and bearing against any convenient part serve as a lever for drawing the door tightly together.

This may also be employed for preventing the entire opening of the door for the discharge of the contents at a single discharge as for instance when it is desired to discharge the contents slowly, the bar remaining in one of the openings 26 to provide for such clearance as may be necessary for accomplishing the desired amount of discharge. When, however, it is employed for closing the door and the door has been drawn tightly to position, the wedging member 27 is again driven home by the useof a hammer or like implement, if necessary, the key 34 then moved to position by driving, if necessary, and the lock 36 will by its own weight fall to the position shown at Figure 3. If in use and owing tothe vibration of the carthe key 34 has a tendency to withdraw from its locking position, the lock 36 will engage against the housing and prevent its moving, but a very slight distance, not suflicient to release the tongue 35 from the groove 33. It is obvious, of course, if it has moved before the door may bereleased, it will be necessary to drive the key 34 to position so that the lock 36 may be lifted and thenthe driving action will be applied to the lock 36 which will move with the key 34 until the shoulders immediately; under the head. or weight engage against the housing in such position that will. hold the key 34 but which position releases the tongue 35 from the groove 33 and permits the disassociation of the parts as described.

What- I claim tov be new is:

1. A dump car lock comprising a housing having an opening therethrough, a hasp properly proportioned to be inserted through the opening of the housing, a block properly positioned to pivot the hasp, means rigidly associated with the block and hasp to prevent tie hasp from falling, when otherwise released, a wedging member properly proper tioned for association with the hasp, a key for the wedging member, and a lock carried, by the key for preventing the release of the key. I

2. A dump ear lock comprising, in combination with a car body and swinging door, a housing rigidly secured to the body and provided with an,opening, a block rigidly secured to the door and movable therewith, a hasp pivoted to the block and properly positioned to pass throughthe opening of the housing, inter-engaging means carried by the block and hasp for supporting the hasp when released from the housing, a wedging mem-. ber carried by the housing properly proportioned to eoact with and secure the hasp, a

sliding key properly proportioned to engage and retain the wedging member, and a gravity controlled lock carried by the key.

3. The combination with a dump car embodying a body and a swinging door, a housing rigidly secured to the body adjacent the door and provided with an opening, a block rigidly secured to the door, a hasp pivoted to the block and provided with a slot, interengaging offsets carried by the hasp and block adapted to prevent dropping of the hasp when released from the housing, a wedging member slidingly mounted within the housing and adapted to enter the slot of the hasp, a key slidably mounted in the housing and adapted to make engagement with the wedging member, and a gravity controlled lock pivoted to the key and adapted to engage the side of the housing.

4. The combination with a dump car embodying a body and a door hinged thereto, a housing rigidly secured to the body adjacent the door, a block rigidly secured to the door,

a hasp pivoted to the block and adapted to enter and pass through the opening of the housing, inter-engaging offsets carried by the block and hasp adapted to prevent the falling of the hasp when released from the housing, a member mounted to'slide in the housing and properly contoured to make en gagement with the hasp, a key mounted in the housing to slide transversely to the sliding movement of the member and to engage said member and hold it in engagement with the hasp, a weight pivoted to one end of the key adapted to swing by its own weight downwardly against the side of the housing and to be lifted manually to slide in part within the housing and another part forming a detent against disassociation of the parts.

5. A dump car lock comprising a housing,

having an opening therethrough, a hasp properly proportioned to be inserted through the opening of the housing, a block properly positioned to pivot the hasp, means rigidly associated with the block and hasp to prevent the hasp from falling when otherwise released, a wedging member properly positioned for association with the hasp, a lug (ZLIIlGC l by the hasp properly positioned for initial engagement by the wedging member, a key for the wedging member, and a lock carried by the key for preventing release of the key.

6. A dump car look comprising, in combination with a car body and swinging door, a housing rigidly secured to the body and provided with'an opening a block rigidly secured to the door and movable therewith,

, a hasp pivoted to the block and properly positioned to pass through the opening of the housing, interengagmg means carried by the block and hasp for supporting the hasp when released from the housing, a wedging member carried by the housing properly proportioned to co-act with and secure the hasp, a lug carried by the hasp properly positioned for initial engagement by the wedging member, a sliding key properly proportioned to engage and retain the wedging member, and a gravity control lock carried by the key.

7. The combination with a dump car embodying a body and a swinging door, a housing rigidly secured to the body adjacent the door and provided with an opening, a block rigidly secured to the door, a hasp pivoted to the block and provided with a slot, interen-- gaging offsets carried by the hasp and block adapted to prevent dropping of the hasp when released from the housing, a wedging member slidably mounted within the housing and adapted to enter the slot of the hasp, a lug carried by the hasp properly positioned for initial engagement'by the wedging mem: ber, a key slidably mounted in the housing and adapted to make engagement with the wedging member, and a gravity control lock pivoted to the key adapted to engage the side of the housing.

8. The combination with a dump car embodying a body and a door hinged thereto, a housing rigidly secured to the body adjacent the door, a block rigidly secured to the door,

a hasp pivoted to the block and adapted to 7 enter and pass through the opening of the housing, interengaging offsets carried by the block and hasp adapted to prevent the falling of the hasp when released from the housmg, a member mounted to slide in the housing and properly contoured to make engagement with the hasp, a lug carried by the hasp properly positioned for initial engagement by the sliding member, a key mounted in the housing to slide transversely to the sliding movement of the member and to engage said member and hold it in engagement with the hasp, a weight pivoted to one end of the key adapted to swing by its own Weight downwardly against the side of the housing and to be lifted manually to slide in part within the housing and another part forminga detent against disassociation of the parts.

In testimony whereof I affix my signature;

ROBERT E. MGGAHEY. 

